primary polydipsia

Also known as psychogenic polydipsia, polydipsia, psychogenic, dipsogenic polydipsia, polydipsia, primary, compulsive water drinking, violation of the thirst center

dry mouth and excessive fluid consumption in the absence of physiological stimuli to drink with physiological suppression of arginine-vasopressin secretion or a decrease in the sensitivity threshold of osmoreceptors (thirst center)